Help solving problem!

  • #1
sens_freak_18
5
0
Each intersection has a traffic signal and the speed limit it 50km/h. Suppose you are driving from west at speed limit. When you are 10m from the first intersection all lights turn green. The lights are green for 13 seconds each. (a) calculate time needed to reach third stop light. Can you make it through all three lights without stopping? (b) Another car was stopped at first light when all the lights turned green. It can accelerate at the rate of 2.0m/s^2 to the speed limit. Can the second car make it through all three lights without stopping? From first light to the second light the distance is 55m. from the second light to third light distance is 85m.

Any help is greatly appreciated!
 

Answers and Replies

  • #2
stunner5000pt
1,455
2
https://www.physicsforums.com/showthread.php?t=4825
 

Suggested for: Help solving problem!

Replies
7
Views
435
  • Last Post
Replies
12
Views
568
  • Last Post
Replies
1
Views
252
  • Last Post
Replies
2
Views
404
Replies
4
Views
301
Replies
24
Views
1K
Replies
2
Views
486
Top